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authorIngo Molnar <mingo@kernel.org>2020-11-27 11:09:57 +0100
committerIngo Molnar <mingo@kernel.org>2020-11-27 11:10:50 +0100
commita787bdaff83a085288b6fc607afb4bb648da3cc9 (patch)
treeec389c1494ef4790ea90f65c4f86e523caf325d0 /arch/s390/kernel/entry.S
parentirq_work: Optimize irq_work_single() (diff)
parentMerge tag 'pm-5.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafa... (diff)
downloadlinux-a787bdaff83a085288b6fc607afb4bb648da3cc9.tar.xz
linux-a787bdaff83a085288b6fc607afb4bb648da3cc9.zip
Merge branch 'linus' into sched/core, to resolve semantic conflict
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/s390/kernel/entry.S')
-rw-r--r--arch/s390/kernel/entry.S4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 86235919c2d1..26bb0603c5a1 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -422,6 +422,7 @@ ENTRY(system_call)
#endif
LOCKDEP_SYS_EXIT
.Lsysc_tif:
+ DISABLE_INTS
TSTMSK __PT_FLAGS(%r11),_PIF_WORK
jnz .Lsysc_work
TSTMSK __TI_flags(%r12),_TIF_WORK
@@ -444,6 +445,7 @@ ENTRY(system_call)
# One of the work bits is on. Find out which one.
#
.Lsysc_work:
+ ENABLE_INTS
TSTMSK __TI_flags(%r12),_TIF_NEED_RESCHED
jo .Lsysc_reschedule
TSTMSK __PT_FLAGS(%r11),_PIF_SYSCALL_RESTART
@@ -1066,6 +1068,7 @@ EXPORT_SYMBOL(save_fpu_regs)
* %r4
*/
load_fpu_regs:
+ stnsm __SF_EMPTY(%r15),0xfc
lg %r4,__LC_CURRENT
aghi %r4,__TASK_thread
TSTMSK __LC_CPU_FLAGS,_CIF_FPU
@@ -1097,6 +1100,7 @@ load_fpu_regs:
.Lload_fpu_regs_done:
ni __LC_CPU_FLAGS+7,255-_CIF_FPU
.Lload_fpu_regs_exit:
+ ssm __SF_EMPTY(%r15)
BR_EX %r14
.Lload_fpu_regs_end:
ENDPROC(load_fpu_regs)